﻿/****************************************************************************************************
	Copyright (C) 2010 RapidWebDev Organization (http://rapidwebdev.org)
	Author: Eunge, Legal Name: Jian Liu, Email: eunge.liu@RapidWebDev.org

	This program is free software: you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation, either version 2 of the License, or
	(at your option) any later version.

	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with this program.  If not, see <http://www.gnu.org/licenses/>.
 ****************************************************************************************************/

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using RapidWebDev.SearchIndex.Contract;
using System.Globalization;

namespace RapidWebDev.SearchIndex
{
	/// <summary>
	/// Indicates where the indexing documents come from.
	/// </summary>
	public class IndexQueue
	{
		private string stringValue;

		/// <summary>
		/// The SaaS application id which all documents belong to.
		/// </summary>
		public Guid ApplicationId { get; private set; }

		/// <summary>
		/// The indexing queue id.
		/// </summary>
		public string IndexQueueId { get; private set; }

		/// <summary>
		/// Constructor
		/// </summary>
		/// <param name="indexQueueId"></param>
		/// <param name="applicationId"></param>
		public IndexQueue(string indexQueueId, Guid applicationId)
		{
			this.IndexQueueId = indexQueueId;
			this.ApplicationId = applicationId;
		}

		/// <summary>
		/// Convert the index queue to string.
		/// </summary>
		/// <returns></returns>
		public override string ToString()
		{
			if (string.IsNullOrEmpty(stringValue))
				stringValue = string.Format(CultureInfo.InvariantCulture, "{0}:{1}", this.IndexQueueId, this.ApplicationId);

			return stringValue;
		}

		/// <summary>
		/// Returns the hash code for this index queue.
		/// </summary>
		/// <returns></returns>
		public override int GetHashCode()
		{
			return this.ToString().GetHashCode();
		}

		/// <summary>
		/// Returns true if the target index queue equals to the current.
		/// </summary>
		/// <param name="obj"></param>
		/// <returns></returns>
		public override bool Equals(object obj)
		{
			IndexQueue indexQueue = obj as IndexQueue;
			if (indexQueue == null) return false;

			return this.GetHashCode() == indexQueue.GetHashCode();
		}
	}
}
